package jdbc;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class JDBCDemo7 {
    public static void main(String[] args) {
        try (Connection connection = DBUtil.getConnection();){
            String sql = "SELECT id,username,password,nickname " +
                    "FROM user " +
                    "WHERE username=? AND password=?";
            PreparedStatement ps = connection.prepareStatement(sql);
            ps.setString(1,"张三");
            ps.setString(2,"12");

            ResultSet rs = ps.executeQuery();
            if (rs.next()){
                System.out.println("登录成功!");
            }else{
                System.out.println("登录失败!");
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}
